From Longman Dictionary of Contemporary Englishpropositionprop‧o‧si‧tion1 /ˌprɒpəˈzɪʃən $ ˌprɑː-/ ●○○ noun [countable]1statementSUGGEST a statement that consists of a carefully consideredopinion or judgmentproposition thatMost people accept the proposition that we have a duty to protect endangered animals.The theory is founded on two basic propositions.2suggestionSUGGEST a suggestion, or something that is suggested or considered as a possible thing to doHe telephoned Stuart with a proposition.attractive/interesting/practical etc propositionThe offer of two tickets for the price of one makes it a very attractive proposition.It doesn’t sound like a very viable proposition to me.I’ve got a proposition to put to you.3 →be a different/tricky/simple etc proposition 4law (also Proposition)SCL a suggested change or addition to the law of a state of the US, which citizensvote onProposition 1475mathematics technicalHM something that must be proved, or a question to which the answer must be found – used in geometry —propositional adjectiveCOLLOCATIONS – Meaning 2: a suggestion, or something that is suggested or considered as a possible thing to doverbsput a proposition to somebody (also make (somebody) a proposition)A proposition was put to Owen, and he is considering it.I’m going to make you a proposition.ADJECTIVES/NOUN + propositiona business propositionDoes this mean you’ve changed your mind about my business proposition?a commercial proposition (=likely to be financially successful)Gold mining is not a commercial proposition here.an attractive propositionSetting up your own business is a very attractive proposition.an interesting propositionA further study focussing on older people is an interesting proposition.a practical/viable proposition (=likely to be possible or successful)A complete ban on strikes is not a practical proposition.